Vvvvfl and think it's a chemical

So we had our 3rd

IUI

on Valentine's day and we were feeling so good about it! I tested out the trigger this past Saturday and starting getting vvvfl Monday Night. We have our first blood test scheduled for Friday and was so excited because tonight I was planning on showing my hsuband. The 2nd one from the bottom (which is the darkest of all the faints, I took this morning) and the bottom one when I got home from work. I also started heavy bleeding today while at work and it hasn't stopped. Now I feel like my period is in full force. I know there can still be a glimmer of hope, but I don't feel the odds are in my favor. It's just so hard, we are 3 years TTC, had a miscarriage at 13 weeks in Nov, I'm really starting to not be able to handle this. I would've felt better if I just got a negative.

UPDATE:

so doctor confirmed this morning. Definitely had a chemical pregnancy. I have to wait until later to see how we will progress for this cycle, but i have residual cysts so his initial thought is, I'll have to sit out this cycle and possibly do another - a 3rd saline test. They are soooo painful!