Allergic to hubs sperm ???!

Is this possible? My husband and I have been TTC and if he cums in me it burns and it's like my vagina is trying to destroy the sperm. He is disease free due to being a sperm donor and being tested regularly. I feel like it's preventing us having a baby. We did get pregnant a few months ago but I miscarried really early on.

The point is am I crazy or can that actually be making it burn after sex and even swell sometimes if he keeps going. It usually goes away within a few hours but it's concerning. Also we might have a blood type issue that is prevent us concieving a viable pregnancy.

Any guidance ? What can I do to help with making the process easier?