Pre seed n burning sensation in my vagina

Ana

Hello friends can any one help me..this month for the first time I used pre seed bought it after a lot of searching n too costly here..when I used it first time I started getting cramps under my belly button a lot of cramps then second time it burned like hell in my vagina during intercourse so I skip using it .now after we have done intercourse without it today it still burning inside

Can anyone have this feeling??

What does that mean??

Plz help