Sounds like it. You'll get there. Sometimes it takes a bit longer than it should.
I started silver 1, won first three games in a row to get to 75lp then lost 6 out of the next 7. Took 5 more wins in a row after that to recover. I'm now on game 25 and just hit promos to gold finally.
lucky bastard. I am only getting 20 lp per win so it is taking a while.