you dont worry ur wife will tech u every thing
1.the way punjabi males have bigger penis, same way Punjabi females also have larger vagina compared to north-eastern girls (my husband says so) i didb't have any problem taking my husband's 11.2" long and 4.5" width on the first night except some bleeding with is very comon. lots of foreplay ill make your wife's vagina as well as your penis lubricated which is enough for first sex.
2. if you are thinking to ejaculate within 1-2 minutes then your wife will never be satisfied by you. do it at least for half an hour, if she reaches orgasm, she will hold you tight and she will have some spasm inside her vagina which you can feel on your penis.
3. sex during period is very messy. so use condom or else go for anal sex which is very comon in Punjabi. but try very slowly at first. she will get use to it slowly and both of you can have pleasure whole through out of your life.
your finger push your wifes vagina and you f**k in doggy style
yes you can sex your wife in period to use condom and you can know ur wife mensuration to see your wifes vagina to open her panty to check blood coming her vagina