Am I allergic to condoms?

So me and my boyfriend have sex and when we do we use a condom. I noticed that the first time we have sex it's fine and whatever but if we go for a round 2 my vagina hurts and feels dry even tho I am not. Sometimes it swell up a little. I also noticed that if my boyfriend takes his condom off and I give him head my throat feels like it's closing up a tad bit. What should I do? Am I allergic or is there just something wrong with me?