In your situation, if you have most likely done your second sujood but you are not 100% sure, you should offer the forgetfulness prostrations after the salam and then offer another salam.

There are places where you offer it before salam and this is when you miss something that is mandatory in prayer or when you are totally confused and do not know whether you prayed it or not.

Sheikh, if i make just one sujjud in a raka(due to long duas,i often am not sure wether i make one or two sujjuds,but i think morelikely that i made 2)or remember this(that i made just one sujud)only after the first tashahud then what should i do?Should i make sujud al sahu before the salam ?is it possible to make sujud al sahu before salam if one doubts he made something or not?

Prayer | March 25, 2014 4:45 am
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I’ve been to many barelwi masjid where they write “ya Muhammad” on one side and “ya Allah ” on other side of the wall where imam stands, or just they write “Muhammad” and “ALLAH”, my question is that is prayer valid on that Masjid?
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I go to Masjid where on the Friday people are given time for 4 rakat sunnah before khutbha and all the people stand up except 1 or 2 including me. At that time I feel like odd man out. What is your advice in this situation? should I also pray or not?