Тошнота, спазмы и температура после секса с новым парнем: что это может быть? Советы?

TMI:

My doctor can’t get me in for a month and a half…I’ve never been consistently sexually active. But since getting a new boyfriend a month ago we have been. I have an iud and he uses condoms still(not pregnancy) after each time I get super sick for no reason at all(nausea period like cramps sometimes headaches or a low grade fever) it only happens after the deed is done…has anyone ever experienced this? This man is my first real sexual partner. So I’m looking forward to other peoples stories! And I have had a normal period since this.