Can’t get pregnant!

Poppy

Ladies I need your help. I know by now I should have seen a Gp but I want that to be last resort! I’m 23, smoker & a little healthy. I’ve been having unprotected sex with multiple partners ( 4 to be exact) in the past 5 years. I’ve not fell pregnant once. They have all been relationships so wasn’t just a one night stand. In a happy healthy relationship and both very ready to start a family! Is there any advice you wonderful mummy’s can give me that can help boost my chances or whatever. Obviously smoking is a biggie I know I have cut down. Thanks in advance xx