Boyfriend's Mother giving DNA test at baby shower!???!

So we have been together for 6 years, are not interested in getting married, and have been ttc for one and a half years.

His mother.... thought it would be a brilliant idea to tell his SIL that she is getting me a DNA test for my baby shower for me to unwrap in front of everyone. SIL told me right away, and I'm livid. He, thinks it's a good idea because his ex cheated on him.

1.) If we were ttc, why the hell would I cheat?

2.) Why the hell would she give it at a baby shower?

3.) I'm NOT his ex.

I'm fucking pissed. Is it too far to deny her to see the baby until I've forgiven her??? I know 100% it's his baby unless Jesus told God he wanted a sibling. Do I even take the test?? Should I call off the baby shower??Should I throw the gift in her face???

Wtf should I do?!?

UPDATE THANK YOU LADIES FOR BEING SO NICE AND UNDERSTANDING!!!!!!

Ok, I'm updating this because with the shower being tomorrow... I have had to make a few decisions.

Background on his mother, she cheated throughout all 30 years of her marriage. She got caught 2 years ago and they are still together.

He does want a paternity test, and I agreed to it, when the womb invader is born, we will get it done, with the stipulations that he apologize to me every day, it gets hung in our living room, and we go to counciling for at least a year.

So I called her the other night and it didn't go very well.

I called her and calmly asked if she in fact was going to give me a DNA kit for a baby shower present. She denied it and then I said, "Well Sarah, (SIL) must have been lying. I'll add her to the call and we all can have a tree way chat about it." She said she didn't want that but I did it anyway.

When Sarah came on, she, (MIL) admitted that she did get me one and was going to give it with her other present of a super pack of condoms..... 😤....

So I told her, "since you lied to me until you were forced to tell the truth, are trying to give me an inappropriate gift, that would be more suitable for your sons, and were going to try to humiliate me in front of my family and friends, you are no longer invited, you will not be allowed around me or your grandchild until you apologize, or until I am comfortable with how horrible you are." Or something like that. Don't remember exactly.

My SO thought it was a good idea so that we didn't have to pay for a test out of pocket at the hospital. He didn't take into account that it would completely humiliate me and hurt my feelings.

He has apologized for being a dumby (his word). And will escort his mother out If she appears.

And that he wants the test does hurt me pretty badly, but it's for his peace of mind and I get to guilt trip him forever for it so I'll get over it.

UPDATE #2

You guys asked for an update I have one.

So MIL is trying to get SO to leave me because I stood up to her.

She sent all his exs copies of the invite to our baby shower and told them to mess with me. SO, his brother, and their father wouldn't let them in. My mother threw her shoe at one of them who brought up a previous miscarriage I had and asked if I was going for stillborn this time...

SO is to have no contact with his mother or he will sign away his rights to the baby, which he now believes is his.

We got most of the stuff on our registry including a much needed prenatal massage gift certificate.

His mother isn't allowed near my child ever now after the shit she pulled.

So all in all a pretty eventful day, and I'm still reeling from it 2 days later.

And please don't try to guess who we are, it's anonymous because I think you guys would tear apart my SO who is on glow.

Thank you guys for helping me get through this shit storm I really appreciate it.

Good luck, baby dust, no baby dust and happiness to you all!

I SAW YALLS POST ON CC ABOUT IT WITH THAT PICTURE TOO FRICKIN PERFECT