Sex help only orgasm once?!!

Hey guys been with my boyfriend for a year he’s got around 6 inches not the thickest penis

Every time we have sex its lasts 4mins

I orgasm and then I get bored or it hurts

And we can’t carry on I wish I could orgasm more ?

I only orgasm in missionary we change it up nothing works!!

Cow girl I can’t feel anything

Doggy is enjoyable for a bit then it hurts

If he fingers me I can’t orgasm from sex I only ever get one orgasm !!

Please help save my sex life it’s been so repetitive for a year!