What do I do



We haven't really been trying too long. We BD one day- when both of my apps said there was a high chance.

I'm suppose to get my period tomorrow or Saturday (both apps say different dates).

I have tested for two days- and this morning (12 dpo) it was a bfn. This morning I also had a bit of cramping and back pain. Both are normal when I have my period....but usually not before.

Should I test tonight? (I'm suppose to go to a party for a friend (there will be drinking)....I assumed I was out for this month).

Give me thoughts or experiences. Thanks in advance!!