making conception easier ?

1.) why is it that i always start my period not too long after masturbating and/or having sex?

2.) i've heard that it's actually bad for you to use a dildo to masturbate.. is that true?

3.) what exactly happens to all the amniotic stuff inside of a woman when she miscarries?

4.) a while back ago i'd landed myself in the hospital due to an abnormally high and low fever (it kept going up and down and wouldn't stay constant), really bad nausea, and extreme abdominal cramps all over my stomach area and also from an extremely early period. the doctors couldn't figure out what was wrong, but kept asking me if i'd ever had kids, if i had how many, and if i'd ever miscarried before..

now, me and my man had originally thought that i was pregnant due to all the pregnancy symptoms i was having before the hospital visit. i took an ept and it said negative (though i don't really believe in them much from one of my friend's multiple negative epts that came up positive 9 months later..) also when the hopsital took a test they said it came up negative as well...

my man was thinking the doctor was asking all those questions about me having kids because he thought i might be a high-risk for miscarrying. could that be true?? (p.s. i don't know if i have a family history of miscarriages or not.. i don't know any of my medical history due to the fact that i was adopted.)

5.) me and my man have been trying to have children... we've lost one already, and if our thought are correct, the hospital visit was a miscarriage too and thus, making our losses at two.

is there anything that i can do or use to make it easier to concieve?